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Maytag Stack Info / Diagnostics

 

TROUBLESHOOTING

CAUTION

Always disconnect power supply before making any continuity checks or resistance readings.

THE MICROPROCESSOR MODELS FOR ELECTRICAL FAILURES

SYMPTOM

CAUSES

TEST PROCEDURE 

SOLUTION

Control will not function

No power to trans-

Check transformer input

Reset breaker, replace

and no pad will

former.

for 120 VAC.

fuse, plug in machine.

respond.

 

 

 

 

 

 

Replace transformer.

 

Transformer

Check transformer for

 

 

 

10 and 26 VAC outputs.

 

 

 

Check for 10 and 26

Replace wiring.

 

Wire Harness

VAC at the control

 

 

 

board.

 

 

 

Plug electric ribbon of a

Replace membrane

Touch Pad

new touch pad

switch.

 

 

assembly into ribbon

 

 

 

connector.

 

 

 

If all above checks

Replace control board.

Control Board

pass

 

Control will not stay on

Control Board

Replace control board.

Replace control board.

unless a program pad is

 

 

 

held down.

 

 

 

An LED or display

Control Board

Initiate the visual diag-

Replace control board.

segment won't light.

 

nostics. If any L.E.D. or

 

 

 

segment won't light

 

CAUTION

Always disconnect power supply before making any continuity checks or resistance readings.

SYMPTOM

CAUSES

TEST PROCEDURE

SOLUTION

Relay, water valve, or

Transformer

Check transformer for

Replace transformer.

lid switch will not func-

 

26 VAC output.

 

ti on.

 

 

 

 

Wire Harness

Check for 26 VAC on the

Replace wiring.

 

 

control board.

 

 

Control Board

Check self-diagnostic

Replace control board

 

 

operation.

 

 

 

Check for 24 VDC at the

Replace wiring.

 

Wire Harness

board and the relays.

 

 

 

Turn on each machine

 

 

 

(dryer and washer) and

Replace relays.

 

All relays have failed

check each relay for

 

 

open.

contact closure. Check

 

 

 

relay coils for conti-

 

 

 

nuity.

 

Motor runs continuously

Run Relay Engaged

Check for constant 24V

Replace relay or control

 

 

to relay coil (control

board

 

 

board problem) check

 

 

 

for stuck relay contact

 

 

 

(relay problem)

 

Washer will only agitate

Reversing Relay

Check for 24V to coi I on

Replace reversing

 

 

spin. Check coil conti-

rel ay.

 

 

nuity.

 

Washer will only spin

Reversing Relay

Check for constant 24V

Replace relay or control

 

 

to relay coil (control

board.

 

 

problem). Check for

 

 

 

relay problem.

 

Washer will not spin or

No power to washer

Check 120 VAC input

Plug in washer. Reset

agitate

 

to the washer

breaker or replace

 

Lid Open

'I E' will persist in

fuse.

 

 

washer display if lid

Shut I id

 

 

isn't shut

Replace lid switch

 

Lid Switch

Check for continuity

Replace wiring

 

 

across lid switch with

 

 

 

the lid shut

 

 

 

Check for continuity

Replace motor

 

Motor

from control board

Replace control board

 

 

output to motor run

 

 

 

relay and from relay

Replace motor run

 

Control Board

 

relay

 

 

contacts to the motor

 

 

 

Perform motor check

 

 

Motor Run Relay

 

 

 

 

Put washer into spin

 

 

 

and check for relay

 

 

 

contact closure

 

   

SYMPTOM

CAUSES

TEST PROCEDURE

SOLUTION

Washer spins instead of

Reversing (Spin) Relay

With power off check

Replace reversing relay

agitates

Control Board

relay for welded con-

Replace control board

 

 

tacts

 

Washer agitates in spin

Washer agitates in

Check for 24V across

Replace wiring, relay

cycle

spin cycle

relay coil - (control

coil, or control board

 

 

board problem)

Replace relay

 

Reversing (Spin)

Put washer into spin

Replace control board

 

Relay

and check for contact

 

 

 

closure

Replace wiring

 

 

Check for continuity

 

 

Control Board

from spin relay to

 

 

 

control board output

 

 

 

and from spin relay

 

 

Wire harness

contacts to the motor

 

 

 

terminals.

 

Washer will not fill.

No water to machine.

Check faucets

Turn of faucets

 

Overflow Switch

Check for continuity

Replace pressure

 

Water Valve

across switch 4 to 5

switch if open

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